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Expansion of variables inside single quotes in a command in Bash
...mple, the following is very unsafe. DON'T DO THIS
script="echo \"Argument 1 is: $myvar\""
/bin/sh -c "$script"
If the contents of $myvar is untrusted, here is an exploit:
myvar='foo"; echo "you were hacked'
Instead of the above invocation, use positional arguments. The following invocation is ...
Android: upgrading DB version and adding new table
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281
1. About onCreate() and onUpgrade()
onCreate(..) is called whenever the app is freshly installe...
Decoding and verifying JWT token using System.IdentityModel.Tokens.Jwt
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148
+50
Within ...
How to use the toString method in Java?
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13 Answers
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When to use NSInteger vs. int
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edited Aug 3 '19 at 20:59
Dmitry
12.7k2020 gold badges8888 silver badges173173 bronze badges
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Should we pass a shared_ptr by reference or by value?
When a function takes a shared_ptr (from boost or C++11 STL), are you passing it:
10 Answers
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Set up git to pull and push all branches
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1334
The simplest way is to do:
git push --all origin
This will push tags and branches.
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Comma in C/C++ macro
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112
Because angle brackets can also represent (or occur in) the comparison operators <, >, &...
BLE（四）嗅探工具 - 创客硬件开发 - 清泛IT社区，为创新赋能！
文章源自：https://www.gandalf.site/2018/11/ble_26.html
商业级的Ellisys BEX400侦听工具最为符合对BLE流量捕获及分析的要求，然而售价过于昂贵；
其次，作为开源硬件且配有混杂模式追踪的“超牙”设备——Ubertooth One拥有二次开发和嗅...
Recommended Vim plugins for JavaScript coding? [closed]
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116
Syntax Checking / Linting
There is a very easy way to integrate JSLint or the community-drive...